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Finding the Fourth Proportional to 198,681.18, 298,032.08 and 65,571.82

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Solution

The fourth proportional to 198,681.18, 298,032.08 and 65,571.82 is: 98,361.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,681.18 : 298,032.08 = 65,571.82 : x
  2. Step 2: Convert to fraction form
    198,681.18/298,032.08 = 65,571.82/x
  3. Step 3: Cross multiply
    198,681.18x = 298,032.08 × 65,571.82
  4. Step 4: Simplify right side
    198,681.18x = 19,542,505,903.99
  5. Step 5: Solve for x
    x = 19,542,505,903.99/198,681.18
  6. Step 6: Final answer
    x = 98,361.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.